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Probe
Cable
Length
Recommended
Meter
HI76407/4F
4 m (13’)
HI9146
HI76407/10F
10 m (33’)
HI76407/20F
20 m (66’)
HI764073
4 m (13’)
HI98193
HI76407 · HI764073 Protected Sleeve Series
DO Probe
with Protective Sleeve
The HI76407/F is a standard Clark-type
polarographic dissolved oxygen probe for
Hanna’s benchtop and portable dissolved
oxygen meters. The probe is constructed of
durable ABS plastic and contains an integrated
temperature
sensor
for
temperature
compensated measurements. It is compatible
with our HI76407A/P PTFE membrane caps.
Each membrane separates the probe’s
platinum cathode and silver anode from
the water sample being measured. Oxygen
diffuses across the membrane and interacts
with the polarographic system to produce a
current proportional to oxygen concentration.
Each cap is easily filledwith HI7041 electrolyte
and screwed on to the probe. The probe’s
protective sleeve makes it ideal for use in
rugged or demanding environments.
1
Shielded, waterproof cable
2
Protective sleeve
3
PEI probe for best field protection
4
Linearized and accurate thermistor
temperature sensor protected behind
a stainless steel cover
5
Silver wire anode element
6
Glass encapsulated platinum cathode
7
Screw cap membrane that holds
potassium chloride electrolyte
solution (HI7041S)
8
Thin, permeable PTFE membrane
isolates the sensor elements from the
testing solution, but allows oxygen to
enter (HI76407A/P)
9
Hole for solution cycling
10
Protective sleeve for field applications
1
2
3
4
5
6
8
7
9
HI76407A/P
Easy, Screw
Cap DO Membranes
When the PTFE (polytetrafluoroethylene)
membrane of the protective cap wears, it is
always good to have a back-up.
HI7040 • HI7041
DO Solutions
It is crucial to the performance of your DO
probe to keep the sensor active with regular
maintenance.
HI7040L
zero oxygen solution set, 500mL + 12g
HI7041S
refilling electrolyte solution (30 mL)
HI7041
refilling electrolyte solution (6 x 30mL)
HI7041M
refilling electrolyte solution (230 mL)
HI7041L
refilling electrolyte solution (500 mL)
HI76407A/P
contains 5 ready-to-use,
replacement membranes.
10
78.6 mm
131.5 mm
158 mm
110 mm
025mm
025mm
016mm
6
Dissolved Oxygen
6.26
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